Sigismund II / Zygmunt II August (1545-1572)
Lithuania. Ducat/Dukat litewski, 1565, 3.51g. Wilno/Vilnius. Crowned and cuirassed bust right; SIGIS AVG.REX.POL.MAG.DVX.LIT. Rev. Crowned Arms dividing date at top; MONE. AVRE. MAG. DVCAT. LIT (Kop.3331 - R6, Kurp.904, Gum.631, Fr.2). Extremely rare. Faint surface crack on obverse. Among the best known. Good lustre. Uncirculated. Estimate Value $50,000 - UP
Ex Spink Sale, London, July 15, 2015, lot 211.